在接触点上,根毛细胞壁内凹.The root hair cell wall invaginates at the point of contact.这张桌子四周是雕刻的内凹边缘.The table has a recessed border carved into it.食人鱼,平头,方头, 子弹头, 椭圆, 内凹, 大草帽, 小草帽等.Piranhas head, bullet, elliptical, Neiao, big stra...
这地方建造得有些不牢靠。The place is a bit jerry-built.我们的不牢靠的记者证所依仗的就是我那几篇杂志上的文章.Our flimsy journalists credentials rest on my few magzine pieces.别爬上那个梯子, 梯子不牢靠.Don t climb that ladder -- It's not secure....